Vulnerability Description
Race condition in the netlink_dump function in net/netlink/af_netlink.c in the Linux kernel before 4.6.3 allows local users to cause a denial of service (double free) or possibly have unspecified other impact via a crafted application that makes sendmsg system calls, leading to a free operation associated with a new dump that started earlier than anticipated.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.12, < 3.12.62 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=92964cPatchVendor Advisory
- http://lists.openwall.net/netdev/2016/05/15/69Mailing ListThird Party Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.3Release NotesVendor Advisory
- http://www.openwall.com/lists/oss-security/2016/12/03/4Mailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/94653Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1037968Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:1842Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2077Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2669Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1401502Issue TrackingPatch
- https://github.com/torvalds/linux/commit/92964c79b357efd980812c4de5c1fd2ec8bb552PatchThird Party Advisory
- https://source.android.com/security/bulletin/2017-03-01.htmlThird Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=92964cPatchVendor Advisory
- http://lists.openwall.net/netdev/2016/05/15/69Mailing ListThird Party Advisory
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.3Release NotesVendor Advisory
FAQ
What is CVE-2016-9806?
CVE-2016-9806 is a vulnerability with a CVSS score of 7.8 (HIGH). Race condition in the netlink_dump function in net/netlink/af_netlink.c in the Linux kernel before 4.6.3 allows local users to cause a denial of service (double free) or possibly have unspecified othe...
How severe is CVE-2016-9806?
CVE-2016-9806 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-9806?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.